I think, as a general rule, anything with multiple stitch types is not going to be suitable for your intended use. The exception might be a Sailrite machine. Not to say a "straight stitch only" machine is necessarily going to work for you. There are tons of older domestic straight stitchers out there that won't. You want an industrial walking foot, ideally.
By all means, keep asking. There could be multi-stitch machines out there that would work. I'm not a walking encyclopedia of sewing machines like some of these guys.
Most of us have been where you are.